LS1TECH - Camaro and Firebird Forum Discussion

Dyno Guesses & Bench Racing Forum Horsepower Estimates | Racing Scenarios

9" on the Dyno..

Thread Tools
 
Search this Thread
 
Old Oct 19, 2008 | 05:19 PM
Share
  #1  
the_merv's Avatar
the_merv
Thread Starter
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default 9" on the Dyno..
I looked around but didn't see anything..

For those that would know this.. what do you think a expected loss of a full weight Moser 9" on the Dyno would be?

I've heard that it alone sucks up about 25-30hp, then you still have to factor 15-18% for the Standard.
Reply
0
Old Oct 19, 2008 | 05:59 PM
Share
  #2  
slow trap's Avatar
slow trap
TECH Addict
iTrader: (22)
 
Joined: Sep 2004
Posts: 2,639
Likes: 0
From: tennessee
Default
i doubt it is anywhere near 25-30. i seem to remember a few that dropped around 10-12 rw or somewhere in that neighborhood.
Reply
0
Old Oct 19, 2008 | 06:10 PM
Share
  #3  
Kingc8r's Avatar
Kingc8r
11 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (21)
 
Joined: Jan 2008
Posts: 4,565
Likes: 59
From: SF Bay Area
Default
^ that's what I've seen as well
Reply
0
Old Oct 20, 2008 | 09:10 PM
Share
  #4  
blazin's Avatar
blazin
TECH Enthusiast
iTrader: (16)
 
Joined: Jan 2005
Posts: 637
Likes: 0
From: Nebraska
Default
Dyno guy told me he seen a 10 bolt 3.42 and switched to a 9 inch with 4.11 and lost 20-30 hp. Thats just what he told me I have no real proff
Reply
0
Old Oct 20, 2008 | 09:14 PM
Share
  #5  
SuperSlow02's Avatar
SuperSlow02
11 Second Club
iTrader: (16)
 
Joined: Feb 2006
Posts: 1,865
Likes: 0
From: Cape Girardeau, MO
Default
probably depends on the car, gears, wheels..etc..etc. WHat you really need to look at is trap speeds. Mine didnt change after the 9"
Reply
0
Old Oct 22, 2008 | 04:41 PM
Share
  #6  
1FASTBIRD's Avatar
1FASTBIRD
TECH Fanatic
iTrader: (21)
 
Joined: Oct 2004
Posts: 1,435
Likes: 0
From: San jose, CA
Default
Originally Posted by SuperSlow02
probably depends on the car, gears, wheels..etc..etc. WHat you really need to look at is trap speeds. Mine didnt change after the 9"
I would agree^^^^
Reply
0
Old Oct 22, 2008 | 04:57 PM
Share
  #7  
RyderTA's Avatar
RyderTA
11 Second Club
iTrader: (3)
 
Joined: Mar 2008
Posts: 257
Likes: 0
From: Utah
Default
There's a guy here(I forget who) that has a 12 bolt that dyno'd back to back and lost 19whp/23wtq. Being heavier than a 12 bolt I would say 20-25 is probably accurate, I never dyno'd my car with the 10 bolt before the swap.
Reply
0

Trending Topics

Old Oct 23, 2008 | 11:48 AM
Share
  #8  
ponygt65's Avatar
ponygt65
TECH Apprentice
 
Joined: Aug 2006
Posts: 335
Likes: 0
From: CA
Default
Originally Posted by 1FASTBIRD
I would agree^^^^
+1
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Oct 23, 2008 | 01:02 PM
Share
  #9  
PewterScreaminMach's Avatar
PewterScreaminMach
TECH Addict
iTrader: (7)
 
Joined: Sep 2006
Posts: 2,628
Likes: 2
From: Austin, TX
Default
It's not a 9-inch, but here are my results for comparison:

I had a stock 10-bolt with 3.73s and a stock driveshaft. I then installed a 3.5" aluminum driveshaft and a Moser 12-bolt with 4.10s. The car lost 19rwhp and 23rwtq on the same dynojet SAE.
Reply
0
Old Oct 23, 2008 | 01:04 PM
Share
  #10  
the_merv's Avatar
the_merv
Thread Starter
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default
Originally Posted by SuperSlow02
probably depends on the car, gears, wheels..etc..etc. WHat you really need to look at is trap speeds. Mine didnt change after the 9"
I'm switching from a Stalled Auto with 3.73's to a T56 with 3.89's, so I see the Trap Speed getting higher easily.
I plan on Dyno'ing with the Drag Lites and the Radials on it. I'll be using an Aluminum Drive Shaft.
Reply
0
Old Oct 23, 2008 | 07:04 PM
Share
  #11  
SuperSlow02's Avatar
SuperSlow02
11 Second Club
iTrader: (16)
 
Joined: Feb 2006
Posts: 1,865
Likes: 0
From: Cape Girardeau, MO
Default
The 1.3-1.6s 60ft times will more then compensate the power lost
Reply
0
Old Oct 27, 2008 | 09:56 PM
Share
  #12  
Datzneat's Avatar
Datzneat
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 679
Likes: 1
From: Around
Default
Went from stock 10 bolt w 3:42s to Moser 9" w 3:73s and lost 20hp 17tq.
Reply
0
Old Oct 28, 2008 | 11:33 AM
Share
  #13  
ponygt65's Avatar
ponygt65
TECH Apprentice
 
Joined: Aug 2006
Posts: 335
Likes: 0
From: CA
Default
Originally Posted by Datzneat
Went from stock 10 bolt w 3:42s to Moser 9" w 3:73s and lost 20hp 17tq.
Some of that could have been the gear change.......but that's good that you have first hand experience and the numbers.
Reply
0
Old Oct 28, 2008 | 02:02 PM
Share
  #14  
Stopsign32v's Avatar
Stopsign32v
Tech Apprentice
iTrader: (1)
 
Joined: Dec 2006
Posts: 191
Likes: 0
Default
Who cares. Its going to be faster.
Reply
0
Old Oct 28, 2008 | 02:54 PM
Share
  #15  
Datzneat's Avatar
Datzneat
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 679
Likes: 1
From: Around
Default
Yea I've gone .2 faster since the switch and still haven't gotten below the 1.7 60' time.
Reply
0
Old Oct 28, 2008 | 03:27 PM
Share
  #16  
ponygt65's Avatar
ponygt65
TECH Apprentice
 
Joined: Aug 2006
Posts: 335
Likes: 0
From: CA
Default
Originally Posted by Stopsign32v
Who cares. Its going to be faster.
YOu mean quicker right?



NAH nee NAH nee FOO FOO.
Reply
0
Old Oct 28, 2008 | 03:47 PM
Share
  #17  
Stopsign32v's Avatar
Stopsign32v
Tech Apprentice
iTrader: (1)
 
Joined: Dec 2006
Posts: 191
Likes: 0
Default
Originally Posted by ponygt65
YOu mean quicker right?
NO!

Originally Posted by Datzneat
Yea I've gone .2 faster since the switch
Reply
0
Old Oct 30, 2008 | 09:18 AM
Share
  #18  
allbaugh_04's Avatar
allbaugh_04
TECH Fanatic
15 Year Member
iTrader: (6)
 
Joined: Apr 2007
Posts: 1,546
Likes: 19
From: Omaha, NE
Default
Originally Posted by RyderTA
There's a guy here(I forget who) that has a 12 bolt that dyno'd back to back and lost 19whp/23wtq. Being heavier than a 12 bolt I would say 20-25 is probably accurate, I never dyno'd my car with the 10 bolt before the swap.
There's a lot of factors that can change your hp on the dyno though, so i am not sure if i would count on that big of a loss no matter what.

question: Basically you lose hp cuz there is more mass to be turned in the 9" right?
Reply
0
Tags
Back to Subforum
Dyno Guesses & Bench Racing Forum
View Next Unread
3rd gen




Advanced Search

All times are GMT -5. The time now is 09:35 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE